[PATCH 3/9] nbd/server.c: add missing coroutine_fn annotations

[Emanuele Giuseppe Esposito]

There are probably more missing, but right now it is necessary that
we extend coroutine_fn to block{allock/status}_to_extents, because
they use bdrv_* functions calling the generated_co_wrapper API, which
checks for the qemu_in_coroutine() case.

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
---
 nbd/server.c | 21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

diff --git a/nbd/server.c b/nbd/server.c
index ada16089f3..e2eec0cf46 100644
--- a/nbd/server.c
+++ b/nbd/server.c
@@ -2141,8 +2141,9 @@ static int nbd_extent_array_add(NBDExtentArray *ea,
     return 0;
 }
 
-static int blockstatus_to_extents(BlockDriverState *bs, uint64_t offset,
-                                  uint64_t bytes, NBDExtentArray *ea)
+static int coroutine_fn blockstatus_to_extents(BlockDriverState *bs,
+                                               uint64_t offset, uint64_t bytes,
+                                               NBDExtentArray *ea)
 {
     while (bytes) {
         uint32_t flags;
@@ -2168,8 +2169,9 @@ static int blockstatus_to_extents(BlockDriverState *bs, 
uint64_t offset,
     return 0;
 }
 
-static int blockalloc_to_extents(BlockDriverState *bs, uint64_t offset,
-                                 uint64_t bytes, NBDExtentArray *ea)
+static int coroutine_fn blockalloc_to_extents(BlockDriverState *bs,
+                                              uint64_t offset, uint64_t bytes,
+                                              NBDExtentArray *ea)
 {
     while (bytes) {
         int64_t num;
@@ -2220,11 +2222,12 @@ static int nbd_co_send_extents(NBDClient *client, 
uint64_t handle,
 }
 
 /* Get block status from the exported device and send it to the client */
-static int nbd_co_send_block_status(NBDClient *client, uint64_t handle,
-                                    BlockDriverState *bs, uint64_t offset,
-                                    uint32_t length, bool dont_fragment,
-                                    bool last, uint32_t context_id,
-                                    Error **errp)
+static int
+coroutine_fn nbd_co_send_block_status(NBDClient *client, uint64_t handle,
+                                      BlockDriverState *bs, uint64_t offset,
+                                      uint32_t length, bool dont_fragment,
+                                      bool last, uint32_t context_id,
+                                      Error **errp)
 {
     int ret;
     unsigned int nb_extents = dont_fragment ? 1 : NBD_MAX_BLOCK_STATUS_EXTENTS;
-- 
2.31.1